diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 26 | ||||
| -rw-r--r-- | drivers/mmc/host/sdhci.h | 2 |
2 files changed, 27 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 70001ecb6ebe..c86c14af479f 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -19,6 +19,7 @@ #include <linux/dma-mapping.h> #include <linux/slab.h> #include <linux/scatterlist.h> +#include <linux/regulator/consumer.h> #include <linux/leds.h> @@ -1608,7 +1609,10 @@ int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state) free_irq(host->irq, host); - return 0; + if (host->vmmc) + ret = regulator_disable(host->vmmc); + + return ret; } EXPORT_SYMBOL_GPL(sdhci_suspend_host); @@ -1617,6 +1621,13 @@ int sdhci_resume_host(struct sdhci_host *host) { int ret; + if (host->vmmc) { + int ret = regulator_enable(host->vmmc); + if (ret) + return ret; + } + + if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) { if (host->ops->enable_dma) host->ops->enable_dma(host); @@ -1889,6 +1900,14 @@ int sdhci_add_host(struct sdhci_host *host) if (ret) goto untasklet; + host->vmmc = regulator_get(mmc_dev(mmc), "vmmc"); + if (IS_ERR(host->vmmc)) { + printk(KERN_INFO "%s: no vmmc regulator found\n", mmc_hostname(mmc)); + host->vmmc = NULL; + } else { + regulator_enable(host->vmmc); + } + sdhci_init(host, 0); #ifdef CONFIG_MMC_DEBUG @@ -1973,6 +1992,11 @@ void sdhci_remove_host(struct sdhci_host *host, int dead) tasklet_kill(&host->card_tasklet); tasklet_kill(&host->finish_tasklet); + if (host->vmmc) { + regulator_disable(host->vmmc); + regulator_put(host->vmmc); + } + kfree(host->adma_desc); kfree(host->align_buffer); diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h index c98315c197ed..ff070a309f8d 100644 --- a/drivers/mmc/host/sdhci.h +++ b/drivers/mmc/host/sdhci.h @@ -249,6 +249,8 @@ struct sdhci_host { const struct sdhci_ops *ops; /* Low level hw interface */ + struct regulator *vmmc; /* Power regulator */ + /* Internal data */ struct mmc_host *mmc; /* MMC structure */ u64 dma_mask; /* custom DMA mask */ |
